Seiko Cal. 5656 - 309

Seiko 5656-309

The 5656-309 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 5656 caliber with 17j jewels beating at 36,000 bph, it delivers a 65 hours power reserve. [seikata-wm-1531da5fe3e4]

Also known as: Bullhead, Bellmatic

Specifications

Movement
Hand-Winding
Case Material
Hardlex-Coated Steel
Case Width
43mm
Case Thickness
14.2mm
Lug Width
19mm
Crystal
Sapphire
Bezel
Rotating
Water Resistance
130m
Dial Color
Black
Jewels
17j
Frequency
36,000 bph
Power Reserve
65 hours
Year
1980

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